Lisa Forster begins to trace her family tree. She very quickly discovers that the birth certificate she has had for thirty years is for a baby who died at the age of four months old and is not in fact her own. Her apparently happy middle class upbringing is a myth and her parents had a dark secret.

With Pete Laundon's help Lisa sets about discovering the truth. Assuming she is adopted she follows up all possible routes, until with no options left she goes to the newspaper for help. After 30 years, who if anyone knows the truth?